Automatic lubricator for die-stocks.



P. FRITZ (Q H. C. CRAWFORD.

AUTOMATIC LUBRICATOR FOR DIE STOCKS.

APPLICATION FILED JAN-3,1916.

Patented July 3, 1917.

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nni'inn STATES PATENT ennien.,.

PETER c. FRITZ 2mm HARRY c. ennwnoitn, on GERMANTOWN, PENNSYLVANIA.

-AUTO1VIA'DIC LUBRiCATOZB FOR EDIE-STOCKS.

Patented July 3, 19m.

it ntatmn tied fianu aty 3, 191%. eerie-'1 no. 69,767.

To (all whom it may comemi Be it known that we, Pn'inn O. Fem and HARRY "C. CRAWFORD, eitizens'ef the United Sta-tesresiding at fiei'fm liftbwii, in the eonnty of Philadelphia and State Pe nsylvania, have invented newttnd useful Kimpfe'vemeiits in Automatic Lnhitieaters fol? Die-Stocks, 'of which the felleyvihg is a specification.

Onr invention relates to new and 'nsefiil improvements alitotrnttiqliihi'ieeftets 'Zfbi' die stocks, and h-as fer its ebj'eet to pltevide an exceedingly simple and elfeetive 'deviee e'f this che'faetei' Wheiebj the dies Gariied by the die stock may be ndeqnately thoroughly readily and easily lilbi'jicated While in Lise.

A fin thei' obj eat of theinventienis to provide t lnhric'tttof fefidie stocks employing the hajldle of the die steel: as the caste-get? th'e 'lnbriczttor, said handle heii'i'g'elqs'e'd at hbth ends and having-ttflduet lending therefrom to a pointjjttdjtteent the dies whereby the lubricant will be conveyed ,fdii'et te'the late of use. I

A still lt'urtheiebjeet-of the ihventien is to divide the "chamber Within the handle iifte two compartments t t sliding mite, one (if said compartments having Fan outlet duet leading thetefr'om, stti'd ce tettrtnients bein in commiihieati'bii when the valve is post t'i'on'ed to closethe oi'ltlet dnet but having said commnniezttib'n intett'upted wh n the outlet duet is Opeiijsttid vttlv'e vvh'eh netti- @1166. serving as it piston to 'vttty the size of the compartments fend positivly tetee the lubricant through, the ontlettinfre't.

Anb'ther object of the intentith is topfrovide a lubiie'ttei for die S tQ kS having "it sliding valve sb eonst i lieted as to dividethe inte'fioi' Of the handle iiitd two cbinieeitments tt'nd to *fu-rthet s'nb divide one of stid compartments to ipifbdnce 2ft spring chamber in vvhieh is si'tnttted 'tt spTihQ 1 01 n'ei mellv fdi'eing the valve in that diietion which Will close the 'otitlet dnct;

Still another ebjett of the invention is to provide a closure it)? the ni'itei end (if the htndle having a stuffing bkthi'oiighiiihich passes the valve stem; the lttt'tei eafffvlng 2t (01m for 'nitthet settling the opening thr'ongh the eiestte and tttittg tte t stt'ptt limit the closing movement of'tlhe valve.

'Anoth'et object of the inventienis' to pmvide "said elo'si-ii'e with a b'iitteii ph'a'mbet for hetlsiiig the hel bf the vtlte stein afid'the button carried thereby to prevent an object comingin centttc't with the button er stem which might ure orbreztk the valve stem or Mitten.

With these ends in vi'eW, on]: inventieh consists in the details f construction and omibinatitin 0f elements hereinafter set fol'th and then specifically designated by the claims.

In order that those skilled in the (lit to which this invention appertt ins, may under; sttndhew to make and nse the same, We will deserib'e its "construction in detail, referring min-trans t0 the accompanying dravving teeming a part of this application in which Figure "1, is at plan view of a die stock Showing 0m invention applied thereto, a p'oition Of one of the handles being bf'oken may. j A

Fig. 2 is it side elevation thereof, partly in section-to. clettfly illustrate the constructio'nf; and

Fig. 3, a section at the line 3-3 of 'ctr'rying on't our invention as here e'mbodied 2 re resents a die sto'ek eonstrueted to freceiveth'e cutting dies 3 and having Wot: opening 4; across which project the dies 3. The die stnck iefnfther provided with handle seekets 5 in which are mounted the handles 6 in Well k'no'wn and ap'plev'ed manner here shown as threaded therein.

In the end of one off the handles 6 01" the end which eng ges the socket 5 is nteunttd bushing 7 f some suitable metal such as brass and pne *end of said bushing is beveled as at 8L This bushing is provided with fa small biitlet o ening 9 registering with an Opening 1i) inthe handle and in the letter is set one end of the Outlet duct 11 tomp'tising a piped elbow 12 and a tube 13 Connected to the elbow 1'? by a suitable tinionfis'a id tube leading to en projectinginto the v'vtji'k "openin of the die stock, so to eenve the lubi'ieztnt "from the interior of the handle '6 to the work and cutting dies. The inner nd "of the handle 6 is th'i'eadfed inteiiorly zts 'z'tt 1'4 in Whi'ch is thr'et dled 2t closure bushing 15 having a, centi tt'l epeni'itg 1'6 normally closed hvtt plug 1'? threaded the-rein. "The enter end oi the handle 6 is else thre ded interietly as at 18 to teceiv'e the eXt'eii'ot'l'y threaded closure 'Hhsaid e10- tnr'e t Henge 20 millet]. tween d. its

outer circumference adapted to cover the outer end of the handle as plainly shown in Fig. 2.

From the inner end of this closure 19 projects a stufiing box 21 having an opening 22 therein communicating with the interior of the handle and with the packing chamber 23 in which is arranged the packing 24 for the valve stem 25, said packing being held in place by the gland 26 threaded into the packing chamber. The closure 19 is also provided with a button chamber 27 open at its outer end, and into which projects the outer end of the valve stem 25, said outer end of the valve stem carrying an operating button 28 mounted'thereon in any suitable manner and adapted to operatewithin the button chamber 27, so that said button will be housed at all times to prevent it being injured or broken when comlng in contact with an object should the die stock fall or hit an object while in use. The valve stem 25 passes through the closure 19 into the lubricant chamber formed by the bore of the hollow handle 6, and the inner end of said valve stem is attached to the valve 30. The valve 30 is arranged to slide in the bushing 7 and consists of a head31 having passageways '32 preferably in the form of notches produced in the inner edge thereof, a base 33 havin passageways 34: entirely therethrough, saiddiase and head being connected by a neck 35 of less diameter than said base or head, thereby producing a feeding chamber 36 entirely around said neck and between it, the bushing, the head and base. The head 31 of the base divides the oil chamber 29 into two compartments, one being the feeding chamber 36 and the other the main chamber or reservoir 37, while the base of said valve sub-divides the innermost compartment into said feeding chamber 36 and a spring chamber 38. r

In the spring chamber 38 is situated the helical spring 39, one end thereof resting against the closure bushing 15 as the immovable object, and the other end resting against the base of the valve as the movable object for normally forcing said valve outward or in that direction which will dispose the base of the valve across the opening leading to the outlet duct, so that said outlet duct is normally closed to the lubricant and when said outlet duct is closed, the passageways or notches 32 place the chamber 37 on one side of the valve head in communication with the chamber on the other side thereof, thus permitting the lubricant to freely flow intothe feeding chamber 36 and the spring chamber 38.

As will be noticed in Fig. 2, the base 33 and the head 31 each snugly fit withinthe bushing 7 so that the latter is of less diameter than the interior diameter of the handle, andwhen said head partially projects from the bushing there is a space between said head and the walls of the handle 'topermit the lubricant to flow into the passageways 32.

In order to regulate the outward or closing movement of the valve a collar 40 is mounted on the valve stem 25 adjacent its outer end which is adapted to engage the inner end of the closure 19 or its stufling box 21 when the valve is in the position shown in Fig. 2, and said collar also acts as a seal so that when the valve isclosed, the lubricant will be prevented from reach ing the opening 22 and the packing in the stuffing boX, thus assisting in the prevention of leakage.

In practice at any time while the die stock is in use and a lubricantis contained within the handle between the two closures, the operating button28 may be pressured or forced inward to actuate the valve against the action of the spring 39. As the valve is actuated the passa eways 32 in the head 31 of the valve will e closed by the bushing 7 thus separating the lubricant in the inner end of the handle from the lubricant contained in the outer end thereof. At about the same time the base 33 of the valve will be moved beyond the outlet opening leading to the outlet duct, and the continued movement of the valve will shorten thelength of the chamber at the inner end of the handle, thereby forcing the lubricant from the spring chamber through the passageways 34 into the feeding chamber 36 and from the feeding chamber into the outlet duct and forced through said outlet duct on to thework and cutting dies, thus positively lubricating said dies. 1

As' soon as the pressure is relieved from the operating button 28 the spring 39 will force the valve to its normal position as shown in Fig. 2, so that the base 33 of said valve will close the outlet opening to the outlet duct and will. move the outer ends of the passageways 32 beyond the bushing 7 or into communication with the beveled edge thereof, so as to establish the communication between thechambers on each side of the valve head 31. The valve will be forced outward until the collar 40 contacts with:

the collar 19, thus stopping the valve and limiting its further outward movement.

In order to take the lubricator apart or to refill the same with lubricant,,.the tube 13 is disconnected from the elbow 12 by means of the union and the handle then removed from its socket. After the handle is removed, the plug 17 may be withdrawn device is again 7 limits of the appended claims without departing from the spirit of our invention.

Having thus fully described our invention, what we claim as new and useful, is

1. In a device of the character stated, a

die stock, a combined handle and lubricant reservoir supported thereby, an outlet duct leading therefrom, a closure bushing having an opening therethrough mounted in the inner end of the handle, a plug for closing said opening, a closure for the outer end of the handle, a valve dividing the reservoir into a number of compartments, said valve also controlling the outlet duct and the communication between certain of said compartments and means for actuating said valve.

2. In a device of the character stated a die stock, a combined handle and lubricant reservoir supported thereby, an outlet duct leading therefrom, a closure bushing having an opening therethrough, mounted in the inner end of the handle, a plug for closing said opening, a closure for the outer end of the handle, a valve dividing the reservoir into a number of compartments, said valve also controlling the outlet duct and the com munication between certain of said compartments, means for forcing said valve in one direction to normally close the outlet duct and means attached to said valve and passing through the outer closure for actuating the valve against the action of the spring to open the outlet opening.

3. In a device of the character stated a die stock, a combined handle and lubricant reservoir supported thereby, an outlet duct leading therefrom, a closure bushing having an opening therethrough mounted in the inner end of the handle, a plug for closing said opening, a closure for the outer end of the handle having a button chamber, a stuffing box formed therewith, a flange exteriorly milled formed with said outer closure, a valve dividing the reservoir into a number of compartments, said valve also controlling the outlet duct and the communication between certain of said compartments, a valve stem attached to the valve passing through the stuffing box of the outer closure and projecting into the button chamber, and a button mounted on the outer end of said valve stem.

4. A device of the character stated comprising in combination, a die stock, a combined handle and reservoir supported thereby, an outlet duct leading therefrom, closures for the ends of said handle and a sliding valve within the handle comprising a head having passageways, a base having passageways therethrough and a neck of less diameter than the head and base connecting them together.

5. A device of the character stated comprising in combination a die stock, a combined handle and reservoir supported thereby, an outlet duct leading therefrom, closures for the ends of said handle, a sliding valve within the handle comprising a head having passageways, a base having passageways therethrough and a neck of less diameter than the head and base connecting them together, said valve dividing the reservoir into a number of compartments and arranged to control the passageways between certain of said compar ments and the outlet duct, and means for actuating said valve.

6. A device of the character stated comprising in combination a die stock, a combined handle and reservoir supported thereby, an outlet duct leading therefrom, closures for the ends of said handle, a sliding valve within the handle comprising a head having passageways, a base having passageways therethrough and a neck of less diameter than the head and base connecting them together, said valve dividing the reservoir into a number of compartments and arranged to control the passageways between, certain of said compartments and the outlet duct, a spring for normally forcing the valve in that direction to close the outlet duct and open the passageways between certain compartments and a valve stem having a button on its outer end for actuating said valve in the opposite direc tion to open the outlet duct and close the passageways between said certain compartments.

In testimony whereof, we have hereunto afiixed our signatures in the presence of two subscribing witnesses.

PETER C. FRITZ. HARRY G. CRAVVFOR-D. Witnesses:

NORMAN H. STEVENS, WM. L. S'rnvENs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

